Bromochlorinated compounds are organic contaminants originating from different natural and anthropic sources increasingly found in environmental compartments. This work presents an online approach for compound specific stable isotope analysis of chlorine bromine ratios bromochlorinated trihalomethanes using gas chromatography coupled to quadrupole mass spectrometry (GC-qMS). An evaluation schem...

The disinfection by-product (DBP) formation was affected by the dissolved organic matter (DOM). Therefore, DOM properties and DBP potential of two most widely used source waters: groundwater (GW) surface water (SW), were comparatively studied in this work. results suggested that GW mainly consisted protein-like organics with smaller molecular weight (Mw) less than 3000 Da, while SW contained hu...

In this study, the changes in UV absorbance of water samples were characterized using defined differential UV spectroscopy (DUV), a novel spectroscopic technique. Chlorination experiments were conducted with water samples from Terkos Lake (TL) and Büyükçekmece Lake (BL) (Istanbul, Turkey). The maximum loss of UV absorbance for chlorinated TL and BL raw water samples was observed at a wavelength...

OBJECTIVES We evaluated the association between drinking-water disinfection by-products and preterm births using improved exposure assessment and more appropriate analysis methods than used in prior studies. METHODS During 1999-2001, vital record data were obtained for a large, racially diverse population residing in 27 Massachusetts communities that received drinking water from a single publ...

Chlorination of pool water leads to the formation of many by-products, chloroform usually being the most abundant. The paper reports the results of a study evaluating exposure of bathers and pool employees to trihalomethanes (chloroform, bromodichloromethane, dibromochloromethane, bromoform) in four indoor swimming pools with chlorinated water. Chloroform concentrations in environmental air sam...

A modelling procedure with a time discretisation of 1 min is developed in order to study and simulate the kinetics of formation of total trihalomethanes (TTHM) in water treatment plants. This methodology was applied on two significant processing units of Athens (Galatsi Treatment Plant-GTP, Menidi Treatment Plant-MTP). The fundamental concept of the model was based on the representation of the ...

AIM This study examined the effects on disinfection by-product (DBP) concentrations of common household methods for processing drinking water. METHODS We investigated the effects of refrigerator storage, jug filtering, boiling in an electric kettle, and supply from an instant boiling water unit, with or without filtering, on four species of trihalomethanes (THMs) and nine species of haloaceti...

During April 25, 2014-October 15, 2015, approximately 99,000 residents of Flint, Michigan, were affected by changes in drinking water quality after their water source was switched from the Detroit Water Authority (DWA), sourced from Lake Huron, to the Flint Water System (FWS), sourced from the Flint River.* Because corrosion control was not used at the FWS water treatment plant, the levels of l...